Garmin 640 Guida Utente

Appendix

When your GPSMAP 640 has acquired satellite signals, the signal 

strength bars on the Home screen (or Menu page) are green. When 

it loses satellite signals, the bars turn red or clear. 
For more information about GPS, go to 

www.garmin.com 

/aboutGPS

. 

For more information about optional accessories, go to 

http://buy 

.garmin.com

 or 

www.garmin.com/extras

, or contact your Garmin 

dealer. 

physical size: W × H ×D: 6 in. × 4 in. × 1 

7

/

8

 

in. 

(151 mm × 102.49 mm × 47.25 mm)

Weight: 17.3 oz. (490.4 g)
Display: 5 

3

/

16

 in. (132 mm) diagonal, 800 × 480 pixels; bright 

WVGA landscape display; white backlight; touchscreen

Case: Waterproof to IEC 529-IPX-7
operating temperature range: From 5°F to 131°F (from -15°C 

to 55°C)

Charging temperature range: From 32°F to 113°F (from 0°C to 

45°C)

Data storage: Internal memory and optional removable SD card. 

Data stored indefinitely.

Computer interface: USB 2.0 high-speed and full-speed mass 

storage

operating system: Garmin
Charge time: Approximately 6 hours
power input: 11–32 Vdc, vehicle power using vehicle power 

cable, or AC power using the included AC adapter. 

usage: 12 W max. 
Battery life: Up to 9 hours with minimum backlight and no XM 

antenna; up to 5 hours with maximum backlight and no XM 

antenna; up to 3.5 hours with maximum backlight and a GXM 

40 antenna.

Battery type: User-replaceable rechargeable lithium-ion battery
gpS receiver: High-sensitivity
acquisition times*: 

Warm: <1 sec. 

Cold: <33 sec. 

Factory Reset: <36 sec.

*Average acquisition times for a stationary receiver with a clear 

view of the sky. 
Compass-safe distance: 17 in. (43.18 cm)